gauge rod (dip stick), wipe it clean
and remsert it firmly for an accurate
reading. The rod is marked
"FULL" and "ADD." The oil level
should be maintained in the safety
margin, neither going above the
"FULL" line nor below the "ADD"
line. Reseat the gauge firmly after tak-
mg the reading.
NOTE: The oi/ gauge
"Use GM 6041-M Quality
Cooling System Care
Check the coolant level at each
engine oil change. Level should be
3" (1" on Nova with 4-cylinder en-
gine) below bottom of filler neck
when cold.
The inhibited year-around engine
coolant, used to fill the cooling system
at the factory, is a high quality
solution that meets General Motors
Specification 1899-M. This factory-
fill coolant solution is formulated to
withstand two full calendar years of
normal operation without draining or
adding inhibitors, provided the same
concentration of coolant is added if
the system needs additional fluid be-
tween drain periods. The original
factory fill coolant provides freez-
ing protection to -20°F. (-32°F. in
Canada).
Every two years, the cooling system
should be serviced as follows:
1. Drain coolant, when hot, through
the radiator drain valve.
2. Close valve and add sufficient
plain water to fill system.
3. Run engine until normal operat-
ing temperature is reached.
4. Drain and refill the system as
described in steps 1, 2, and 3 a
suflicient number of times until
the drained liquid is colorless.
5. Allow system to drain completely
and then close radiator drain
valve tightly.
6. Add the necessary amount of high
quality inhibited glycol base cool-
ant meeting GM Specification
1899-M to provide the required
freezing and corrosion protection
(at least to 0°F.)
7. Run engine until normal operat-
ing temperature is reached.
8. Check and adjust level of coolant
after system has cooled sufficient-
ly to remove radiator cap.
It is the owner's responsibility to
keep the freeze protection at a level
commensurate with the temperatures
which may occur in the area in which
the vehicle will be operated. Regard-
less of whether freezing temperatures
are or are not expected, cooling sys-
tem protection should be maintained
at least to 0°F. to provide adequate
corrosion protection.
When coolant additions are re-
quired because of coolant loss or to
provide additional protection against
freezing at temperatures lower than
-20°F, (-32°F in Canada) a suffi-
cient amount of an ethylene glycol
base coolant meeting GM Specification
1899-M should be used.
NOTE: base
af any time.
56
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